Language switch costs have been explored less in receptive tasks than in productive tasks, and previous studies have produced mixed findings with regard to switch cost symmetry and the relationship of switch costs to executive function. To address these unresolved gaps, one hundred Chinese-English bilingual adults completed a bilingual lexical…

Executive function (EF) skills play a crucial role in young children's academic and social-emotional development. Given that factors associated with poverty can compromise the development of EF skills, it is vital to continue to examine what factors help predict and support EF skills in children from at-risk backgrounds. Using a sample of Head…

This study examined the concurrent relations of English (EL) and heritage language (HL) proficiency to executive functions (EF) among low-income dual language learners (DLLs) from immigrant families. In a sample of 90 children (age = 38-70 months) from Chinese-speaking Chinese American and Spanish-speaking Mexican American families recruited from…

The Massachusetts Preschool Expansion Grant (PEG) model supported and expanded high-quality preschool in high-needs communities. PEG required shared governance between local school districts and Massachusetts Department of Early Education and Care-licensed community-based programs. The 48 PEG classrooms provided free prekindergarten for…

Research Findings: This study examined the heterogeneity in Spanish-speaking children's (N = 117; M age = 53 months; SD = 5 months; 57% boys) vocabulary and letter-word skills in English and Spanish after one year of preschool and the extent to which early self-regulation abilities (i.e., executive function and effortful control) were associated…

This study compared bilingual and monolingual school beginners on measures of simple and complex verbal working memory and receptive and expressive vocabulary. The aim was to determine whether the tests of working memory are fairer measures of language ability than the vocabulary tests for bilingual children when tested in their second language.…

This cohort-sequential study explored the components of working memory (WM) that underlie second language (L2) reading growth in 450 children at risk and not at risk for reading disabilities (RD) whose first language is Spanish. English language learners designated as balanced and nonbalanced bilinguals with and without risk for RD in Grades 1, 2,…

Previous research has demonstrated that being bilingual from birth is advantageous for the development of skills of social cognition, executive functioning, and metalinguistic awareness due to bilingual children's extensive experience of processing and manipulating two linguistic systems. The present study investigated whether these cognitive…